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Sundown Audio SA-15 D4 Classic 15" 750 Watts Dual 4-Ohm SA Series Subwoofer

  • SKU #: 01124

Special Price $299.99

Retail: $399.99

($100.00 savings)

Availability: In Stock

Condition: Brand New
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Sold As: Individually

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Special Price $299.99

Retail: $399.99

Sundown Audio SA-15 D4 Classic 15" 750 Watts Dual 4-Ohm SA Series Subwoofer

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Features and Specifications:

The SA series was designed to be an excellent sounding subwoofer that is equally at home sealed or ported. We feel that the SA series is one of the best woofers available in it's price category and will satisfy the needs of a wide variety of users ranging from bass-heads to audiophiles!

The SA series is also gaining popularity in SPL competitions due to their excellent voice coil cooling and rugged, durable constructions with several customers achieving output well over 150 dB!

  • RE (ohms): 4.61
  • FS (Hz): 34.88
  • Vas (L): 54.69
  • Qes: 0.72
  • Qms: 6.52
  • Qts: 0.65
  • Le (mH): 3.39
  • BL (NA): 21.76
  • Mms (Grams): 338
  • Cms (uM/N): 61.42
  • Sens (1w/1m): 86.81
  • Cutout Diameter: 14 1/8"
  • Mounting Depth: 7 1/2"
  • Overall Diameter w/ Gasket: 15 5/8"
  • Displacement: 0.17ft^3
  • RMS: 750 Watts
  • 19.0mm X‐Max by 70% BL method one‐way (38.0mm peak to peak)
  • Thick black anodized aluminum voice coil formers for maximum strength and heat dissipation
  • 4‐layer copper high temperature voice coil windings with 45mm winding length
  • Double layer permanently bonded high strength Nomex spider pack for maximum longevity and durability
  • Thick flat tinsel lead wires tied down to the spider to prevent lead noise and breakage
  • Custom tooled triple joint support ring
  • Custom tooled frame spacer / ventilation ring
  • High efficiency air‐flow management integrated into the motor for maximum voice coil cooling
  • Dual Aluminum Faraday rings for reduced inductance and inductive distortion (pole cap and magnet ID)
  • Two‐Year Warranty against defects in materials and workmanship

Box Recommendations:

  • Recommended Box Specs (Sealed): 2.5ft^3 (Yields F3 of 41Hz)
  • Recommended Box Specs (Ported): 3.5ft^3 (Tune to 35Hz, Yields F3 of 28Hz)
  • Specifications are measured after about 5 minutes of break-in time
  • You will see the CMS loosen up another 33% after some serious play time, which will both reduce the FS and Qts figures of the drivers
  • Some Re variance is shown based on coil temperature from break-in period
  • D2 is closer to 4.0 in series and D4 7.0 in series at room temperature
  • This does not affect box calculations.
  • Box specifications are suggestions – other volumes and tunings can be used based on the needs of your application
  • The SA series woofers are compatible with most quality pre-fabricated enclosures as well
  • They also lend themselves favorably to fourth order band-pass enclosures
DC Resistance (Re) Ω 7.75
Resonance Frequency (Fs) Hz 36.95
Equivalent Volume (Vas) L 52.35
Electrical Q Factor (Qes) 0.85
Mechanical Q Factor (Qms) 6.63
Total Q Factor (Qts) 0.75
Voice Coil Inductance (Le) mH 4.98
Force Factor (BL) NA 25.87
Moving Mass (incl. Air Load) (Mms) g 315
Suspension Compliance (Cms) mm/N 58.8
Sensitivity 1w / 1m 86.68 dB
Sealed Enclosure Suggestion cu. ft. 2.5
Ported Enclosure Suggestion cu. ft. 3 - 4 @ 35Hz
Displacement cu. ft. 0.17
Depth in 7.5
Outside Diameter in 15.625
Cutout in 14.125

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